Publish/subscribe system

摘要

A publish/subscribe apparatus (10) comprises a publisher (28), a subscriber (32), a communication pathway (11), and a filtering mechanism (20). The publisher (28) is operative to generate a message instance. The subscriber (32) is operative to receive the message instance. The communication pathway (11) has a publish/subscribe mechanism (38). The filtering mechanism (20) has a first filter (24) provided by the publisher (28) and a second filter (26) provided by the subscriber (32).